I've done Boyd's too depending on the price and time of the crawfish boil that day.
Cajun Gourmet delivers to different drop off spots around the city. $4.25 right now I think. I used them on 1/29 and was pleased. Only thing, I think most of the crawfish from the venders will be small. The cold isn't helping. L&L seafood on 45 N is another place I've gone too and watch prices.